cmd := exec.Command("sh", "-c", "echo stdout; echo 1>&2 stderr")
	stdoutStderr, err := cmd.CombinedOutput()
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%s\n", stdoutStderr)
}

func ExampleCmd_Environ() {
	cmd := exec.Command("pwd")

	// Set Dir before calling cmd.Environ so that it will include an
	// updated PWD variable (on platforms where that is used).
	cmd.Dir = ".."